Question

why do all offspring have brown fur? a) because the allele for black fur color is dominant b) because the allele for brown fur color is recessive c) the genes were not mixed well enough d) because the allele for brown fur color is dominant

Explanation:

In genetics, dominant alleles are expressed in offspring. If all offspring have brown fur, it's likely because the allele for brown fur color is dominant over other fur - color alleles.

Answer:

d) Because the allele for brown fur color is dominant